Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
160032goodexcellent61excellent
150035goodexcellent81excellent
140030goodexcellent91excellent
130040goodexcellent71excellent
120042goodexcellent71excellent
110051goodexcellent61excellent
100034goodexcellent51excellent
090025goodexcellent51excellent
080023goodexcellent41excellent
070020excellentexcellent41excellent
060019excellentexcellent41excellent
050022goodexcellent51excellent
040029goodexcellent61excellent
030031goodexcellent61excellent
020032goodexcellent61excellent
010026goodexcellent71excellent
000026goodexcellent71excellent
230028goodexcellent71excellent
220038goodexcellent71excellent
210037goodexcellent81excellent
200029goodexcellent71excellent
190027goodexcellent71excellent
180030goodexcellent71excellent
170027goodexcellent71excellent